Piper Turbo Saratoga PA-32-301T Pilot's Manual page 256

SECTION
9
PIPER AIRCRAFT CORPORATION
SUPPLEMENTS
PA-32-301T,
TURBO SARATOGA
(e)
Emergency
operation
with optional
NSD 360A (HSI) - Slaved
and/or Non-Slaved:
NSD 360A
(1) Appearance
of HDG flag:
a.
Check
air supply gauge
(vac
or pressure) for adequate
air
supply
(4
in. Hg. min.)
b. Check compass
circuit breaker.
c.
Observe display for proper operation.
(2)
To disable heading card
-
pull circuit breaker and use magnetic
compass for directional
data. (Factory
installation
may utilize
NSD and electric trim circuit breaker.)
NOTE
If heading
card is
not operational, autopilot
should not
be used.
(3)
With card
disabled, VOR/ Localizer
and
Glide Slope displays
are still functional; use card set
to
rotate card to aircraft head-
ing for correct picture.
(4) Slaving
Failure
-
(i.e.
failure to self-correct for gyro drift):
a.
Check that gyro slaving switch is set to No. I position
(if
equipped with Slave No. 1
-
No. 2 switch) or "Slaved"
position
when
equipped
with
Slaved and Free Gyro Mode
Switch.
b.
Check for HDG flag.
c.
Check compass
circuit
breaker.
d.
Reset
heading
card while observing slaving meter.
NOTE
Dead slaving meter
needle
or a needle displaced
fully one direction indicates
a
slaving system
failure.
e.
Select
slaving amplifier No. 2, if equipped. If
not
equipped,
proceed
with
item
g
below.
f. Reset heading
card while checking
slaving
meter. If proper
slaving
indication is
not
obtained.
g.
Switch
to free gyro mode and periodically
set card as
unslaved
gyro.
REPORT: VB-1070 ISSUED: APRIL 4, 1980
9-32
REVISED: MAY 16, 1980